This is one of those chapters where if you take the time to look at the player's tiles and each of their moves, you can understand a lot more than what transpires by reading the text. I love chapters like that. Of course, a certain knowledge of the rules of riichi mahjong really helps. Sometimes I wish that the characters would explain more, it's usually up to the reader to figure most things out. But it's also great when you notice such things on your own.
Saki ch187 (Mega)
Saki ch187 (Mediafire)